Holy Plain

The battle starts with three Escort Teams, two Stormtrooper groups and two Assist Teams. The second wave of enemies - four Beastmaster groups - appears after taking the first one out, followed by three Mystic Squads when some of the Beastmasters are dead.

Finish them off to lure out the mini boss - a Beastmaster group with a Dragon (~270,000HP) - accompanied by two Stormtrooper and two Commandos groups. Two more Assist Teams together with a Stormtrooper and a Commandos group appear the next turn.

More reinforcements will come after each turn until you finish the mini boss (there is a limit to the number of reinforcements).

The fight ends when the mini boss dies.

Reward:

Gold depending on how many enemies you killed (approximately 46,784 gold if you kill every single enemy and wait out all reinforcements).